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  <title>计算数组中所有值的乘积</title>
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  <div id="layout-content"><div id="function.array-product" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">array_product</h1>
  <p class="verinfo">(PHP 5 &gt;= 5.1.0, PHP 7)</p><p class="refpurpose"><span class="refname">array_product</span> &mdash; <span class="dc-title">计算数组中所有值的乘积</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-function.array-product-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>array_product</strong></span>
    ( <span class="methodparam"><span class="type">array</span> <code class="parameter">$array</code></span>
   ) : <span class="type"><a href="language.pseudo-types.html#language.types.number" class="type number">number</a></span></div>

  <p class="para rdfs-comment">
   <span class="function"><strong>array_product()</strong></span> 以整数或浮点数返回一个数组中所有值的乘积。
  </p>
 </div>

 <div class="refsect1 parameters" id="refsect1-function.array-product-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<code class="parameter">array</code></dt>

     <dd>

      <p class="para">
       这个数组。
      </p>
     </dd>

    
   </dl>

  </p>
 </div>

 <div class="refsect1 returnvalues" id="refsect1-function.array-product-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   以整数或浮点数返回一个数组中所有值的乘积。
  </p>
 </div>

 <div class="refsect1 changelog" id="refsect1-function.array-product-changelog">
  <h3 class="title">更新日志</h3>
  <p class="para">
   <table class="doctable informaltable">
    
     <thead>
      <tr>
       <th>版本</th>
       <th>说明</th>
      </tr>

     </thead>

     <tbody class="tbody">
      <tr>
       <td>5.3.6</td>
       <td>
        空数组现在会产生 1，而之前此函数处理空数组会产生 0。
       </td>
      </tr>

     </tbody>
    
   </table>

  </p>
 </div>

 <div class="refsect1 examples" id="refsect1-function.array-product-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-6056">
    <p><strong>Example #1 <span class="function"><strong>array_product()</strong></span> 例子</strong></p>
    <div class="example-contents">
<div class="phpcode"><pre><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /><br />$a&nbsp;</span><span style="color: #007700">=&nbsp;array(</span><span style="color: #0000BB">2</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">4</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">6</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">8</span><span style="color: #007700">);<br />echo&nbsp;</span><span style="color: #DD0000">"product(a)&nbsp;=&nbsp;"&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #0000BB">array_product</span><span style="color: #007700">(</span><span style="color: #0000BB">$a</span><span style="color: #007700">)&nbsp;.&nbsp;</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />echo&nbsp;</span><span style="color: #DD0000">"product(array())&nbsp;=&nbsp;"&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #0000BB">array_product</span><span style="color: #007700">(array())&nbsp;.&nbsp;</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</pre></div>
    </div>

    <div class="example-contents"><p>以上例程会输出：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
product(a) = 384
product(array()) = 1
</pre></div>
    </div>
   </div>
  </p>
 </div>

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